Here are some of the names I picked up today. I spent a bit of time researching available 4 letter words.

aged.mobi
grad.mobi
weak.mobi
rely.mobi
mild.mobi
lame.mobi
sued.mobi
pity.mobi
fave.mobi
pour.mobi
tend.mobi
coup.mobi
cant.mobi
drew.mobi
tons.mobi
harm.mobi
poly.mobi
vise.mobi
eyed.mobi
worn.mobi
rows.mobi
heck.mobi
grin.mobi
fuss.mobi
dull.mobi
sigh.mobi
dues.mobi
mock.mobi
nope.mobi
hail.mobi
chap.mobi
grim.mobi
stab.mobi
meth.mobi
pits.mobi
limp.mobi
skid.mobi
bunk.mobi

tipcalc.mobi
threats.mobi
circulars.mobi
tablature.mobi
findrealty.mobi
phonereview.mobi
azgolf.mobi
flooded.mobi
firearm.mobi
quickpix.mobi
phonepix.mobi
circular.mobi
webalbum.mobi
jazzclub.mobi
winebars.mobi
movies2go.mobi
rentaboat.mobi
jazzclubs.mobi
valuations.mobi
filefolder.mobi
smokeshops.mobi
meditations.mobi
poolservice.mobi
travelplans.mobi
fantasycars.mobi
aznightclubs.mobi
hikingtrails.mobi
rapringtones.mobi
realtylocator.mobi
emergencycare.mobi
productreview.mobi
vacationplans.mobi
digitalwallet.mobi
digitalcoupon.mobi
tipcalculator.mobi
artsandcrafts.mobi
drugreference.mobi
rockringtones.mobi
digitalcoupons.mobi
forclosurelist.mobi
crossreference.mobi
malecelebrities.mobi
femalecelebrities.mobi
christianringtones.mobi
VEHICLEHISTORYREPORT.mob

plus some more lll.mobi's.