Question: I've been freelancing since June 2013 and haven't been able to find work in all that time.

I'm very short on funds so I'm sticking to free online classifieds but I haven't had so much as a nibble from any of my ads.

I've got a facebook page and twitter account that I'm relatively active on, but I'm not getting any likes/follows... My website is also SEO'd up the wazoo and despite getting dozens of hits daily, I'm not getting any business...

I'm offering software development services using the Microsoft .NET Framework (both Visual Basic and C# programming languages) and web design/development using asp.NET, wordpress, php, jquery, css3, html5, etc.

Does anyone have any suggestions?

Answer: 
The best way to find work is to go where your best customers will be. You've described the kind of service you can provide, but you haven't focused at all (at least in your question) about the type of customer you want to work for. Consider the following:

* Is your best customer local or anywhere? (Local makes a lot of legal and payment things easier and allows you to work onsite, non-local complicates these things and may mean remote only work)
* How big is your best customer? (Are they small or large?)
* What market segment is your best customer in? (Private? Government? Non-profit? Industry specific?)
* etc.

You may think you are better off not answering these questions or saying "all" to them, but actually it is better to come up with real answers to these questions. Different clients will look for freelancers in different ways. For example:

I provide similar services to you (.NET, mostly ASP.NET). I work only with small, local tech-savvy companies. These organizations typically look for freelance programmers via their network and via Google. So I use 3 marketing strategies:

* I keep in regular contact with my network and have lunch/coffee/whatever with them to let them know when I am looking for new work.
* I joined my local chamber of commerce so I am regularly meeting a lot of small business owners.
* I occasionally use Google Adwords.

For other types of customers, you may need other approaches. Here are some other things worth considering:

* Working with a third party firm.
* Attending user groups / code camps / etc. and networking.
* Joining industry specific groups.
* Using some kind of freelance site for finding work.
* Contacting colleagues and asking for referrals.
* Contacting former clients and asking for work.

But again - this will largely depend on what kind of customer/projects you are interested in. It is better to narrow your focus because then you can properly put effort into a couple of key strategies, instead of throwing everything against the wall and seeing what sticks. You want to look very attractive to the type of customer that you want to work for, and a scattershot approach won't make you look attractive, it will make you look desperate.
I had similiar issues in my freelance Resume service back when i was running it. My answer would be to check out Guerrilla Marketing for free.

My other suggestion would be, Pound The Pavement. If you can create software and webdesign, start hitting up small businesses.

Restaurants? Create a "package deal" where you would create a small website that lists their location, menu, fun facts, etc. Offer in the package to include them on yelp and other social sites. If it's relevant (ie: delivery, reservations) offer to create an app, (if you are able) for them for those types of services.

Local sportscard/Comic Book/ etc... offer a website package that can link to a database that would have their items on hand. You could even create a "barcode" program that would link to their database and autopost on the website.

Heck, if you have time, pull up their website, redesign it, and then take in your mock up to the owner and tell them what you can do. I've found that small biz owners need tangible proof their website is horrible compared to a pro's.

My only warning would be: DO NOT WORK FOR THEM FOR FREE, NOR OFFER STRICT DISCOUNTS.

They'll say "you already made the site" why not give it to me for half. Advise them that's just visual, and doesn't have code needed to run properly.