Agree with everybody on this.
The strategy to force people into signing up might be suitable for online games or gaming addicts anonymous, but not for a professional VA who is trying to build an excellent reputation for her business. It's a whole different ball game you are in. You are not selling some unprofessional crap online, you are looking for building proper business relationships. Do your marketing advisors actually know about marketing to the right audience and how to do that? I doubt it.
There is a directory of VA websites on here. Just check out the menu and make some time to go through all the websites and take from them what you feel is most suitable. These VAes are successful in their businesses and their websites have proven successful marketing tools as well.