Have you thought about an autoresponder email-type program? I do this with every lead we generate. The great thing about it is... you put them into the list... and the program works for you.
Here's an example of one of ours...
The person signs up for a free 7-Day e-Course on how to market their contracting business.
Each of the seven days gives them information... as well as a call-to-action to one of our services.
After the seven days... they receive 4 different sales lettesr for our services...
After that - they receive a daily "marketing tip" (101 in total) - with an offer to our services.
You could employee the same type of tactic with your internet leads. Whenever you get one, add them to your autoresponder list.
day one, they get a introductory email...
Day two they get more info on the services you can help them with
day three they get a few testimonials from past clients
day four they get a special offer for contacting you today
day five they get more testimonials
then general info on your industry with call-to-actions to contact you can be sent out on a weekly or bi-weekly basis.
The nice part is - once you set everything up - it does the work for you.
I use
www.autowebbusiness.com for this. They have a $4 30 day trial. After that, the autoresponder portion is only $30 a month. Well worth it.
The best part is... once they contact you - you simply remove them from the mailings. Until they... you get to keep your name in front of them.