If your card is Kingston 2GB MMCMobile, you can probably safely use fanoush's faster kernel and move your OS to the mmc.

Also you can stop the media scan demon of the default media player. This would give you faster device right after reboot (that's when the daemon scans usually).

Consider also using Opera, since it is faster than microb, you can also disable flash (since it is mostly unusable) and adblock webaddon (too much overhead, you can stop most of the ads by disabling the flash).