It's great so far for a father like me eith two young kids. It's difficult to find time for private lessons - if there is I will spend the time teaching them anyway. Guitartricks let me pick up my guitar again after leaving it rusting for 10+ years.
Technique-wise, my initial comment is the lessons are not thorough enough. Say I'm learning sweep picking, and I found myself searching youtube for additional practices. I hope Guitartricks can provide more high quality practice materials.
Song-wise, you got some good ones such as Hotel California and Pretty Fly for a White Guy. Since I'm not familiar with most of the songs in your library, I hope Guitartricks can offer a way to listen to the songs available, so I don't need to youtube each of them. There are many songs to youtube.
Thanks and I think I'll continue to enjoy Guitartricks.