HI Marie
There are two thing important, first the TGP where you are posting on, does it blindlink alot , where does the traffic comes from, or does the site have a lot of bookmarkers.
Then there is the description of the gallerie and position what will generate the links on the actually gallerie.
Then there is the gallerie that has to have exclusive gallleries, that load fast, with nice thumbs and relevant text and a look and feel of the landingspage where that traffic will come.
If they click from the gallerie to the landingspage they are interested and they have to have the feeling that the gallerie is in synergy with that page.
What is the conversion from gallerie to frontpage on the galleries?
The galleries have to be posted on TGP's that are niche related to that gallerie to get best conversions.
We have a click trough on the galls from 10-25% on the tgp and then a (you know lol ) conversion on the frontpges