tbh, I dont think 20 apps arent too many cuz I have 2 or 3 friends who have more than 50 apps, maybe 100 apps and it took me too long loading page to surfing their profile...
If a person had 20 applications and you minimized all of them, it would still take up more than half a page. The Mini-Feed also shows anything that's been done in the applications. However, the updates through the Mini-Feed are usually "bigger".
For instance, if someone becomes friends with me... it will say "Bob has become friends with him." It's small. A tiny icon is used. That's it.
If someone threw a snowball at me using my "Snowball!!" application (if I had this application), it would show up on my Mini-Feed with a huge avatar that takes up 2 to 3 times more than the typical update.
If normal updates were made on a Mini-Feed, it would only take up less than half a page. With at least 20 applications, the Mini-Feed will likely take up more than one page.
The most popular feature is the Wall where people can "shout out" anything. The Wall is like walking in a public place and seeing your friend walk by. I see you walk by, I say... "Hey man! How are you? Long time no see!" Simple, eh?
Having too many applications is like you walking around with a bunch of boxes and bags. I see a person walking by with so much stuff that I don't immediately recognize you. So, I walk by and don't say anything to you.
Having too many applications is like the front yard of your house. You have one application... like the simple "Welcome" mat at your front door. I stop by your house and pay you a visit. You have too many applications... like lawn ornaments, huge plants and flowers surrounding your front door, Christmas decorations (Yep, some people still have Christmas applications in their profile even when Christmas is over.), etc... making your house seem very unwelcome. Do I feel like walking through all of that junk just so that I can stop by and say, "Hi"?
So, having too many applications makes me have to scroll down a lot just so that I can post on your wall. If you want me to say something to you, then allow me to say it quickly as soon as I visit your profile. Don't make me move the cursor to the right, scroll down... and scroll down some more... and scroll down some more... while I'm getting a headache seeing all of those applications shoved in my face... *groans* Never mind, I give up. *closes window* Gee... no post on your Wall from me!