In the portofoliogridview: can i choose what text appears on the backside of the thumbnails, can i omit the thumbnails on the back, can i style this text?
Do you talk about this type: http://ximudesign.com/aside/portfolio-filter/ ? the title is on back. You could change the style of the text by custom css.
Can I create multiple portofolios?
Sure, you could use multiple portfolio modules in a page
Can portofolios be crosslinked via tags?
I am clear this question, plz give more tips
Can I use a topmenu instead of the sidemenu
Yes, it can be chieved by custom css, but it maybe loss some features.