Since you've finished RTK, why not just read native Japanese media and SRS
words you don't know on the side? It would be such a waste to finish RTK
and do nothing afterwards.
Even a little bit on the side is OK.
For example, find one (or more) Japanese blogs to read every once in a while.
Most blogs I have are updated maybe every few days(or sometimes weeks). For me,
this is frequent enough to keep Japanese fresh in my mind, but not so often that I
burn out or give up.
Here are some of the blogs that I look at:
Kyoko Uchida (personal blog of a famous Japanese drama actress):
http://www.kyokouchida.com/diary/
Nihongo Day by Day (Japanese teacher in Tokyo blogging about Japanese!):
http://nihongodaybyday.blogspot.com/
The Daily Yoji (great for learning that 4-kanji compounds):
http://thedailyyoji.blogspot.com/
Sweet and Savory (Cooking blog by a japanese cooking instructor):
http://sweetandsavory.blog110.fc2.com/
If you are a fan of any Japanese musicians, actors/actresses, etc., they
might have an online blog. Or maybe you can find a blog written by a
normal person that shares a similar interest.
Blogs are really nice since they are very personal and you get a glimpse
into the life of a native japanese person.
They are short enough that they don't take much time to read.
And the best part is when you start responding to blog posts!
So basically my advice is to find something short and sweet to do everyday in Japanese.
Even 5 to 10 minutes is OK.
Edited: 2010-01-16, 3:20 am