2010 was a mix year for me.
March-June was probably the most fun I've had on a forum, May was the best month in MPL history imo.
July was alright, switching from SMPSFII to MPL, it was a good change and such.
Aug-Oct was the worse ever imo lol So much drama, I mean too much. One good thing though, MPI is created.
Nov-Dec were very good months, and some of the most active on the forum, also MPFS started. (Also Team Love/Love and Beauty started!

)
Overall: May 2010 definitely, that will always be my favorite moment

2011 was a good year, however, the activity lessening later in the year made it sort of boring. The year was fine, July hit and MPL hit a massive slump that even I'll admit, I didn't want to be on for a while. MPI/MPFS died and we had to move on... so yeah, 2011, not my favorite year. But new hope did start at the end of 2011 with a new theme/MP9 news/AA, so not all bad.
Overall, May 2010 where me and the rest of the people became MODs and were working together; that was my favorite moment.