Problems with database bloat

I hope I'm reading this query wrong:

trend=# select relname, relpages*8192/reltuples from pg_class where
reltuples>0 order by relpages desc limit 10;
relname | ?column?
-------------------------------+------------------
property | 19935.4468376195
result_entry_pkey | 1611.15654062026
result_entry | 1417.71707157196
person | 7107.41684585612
property_feature_pkey | 98.7810833557521
property_feature | 60.2035684051268
person_name_i | 3358.93641334398
property_price_i | 1978.89907374882
property_mls_listing_number_i | 1923.61833274788
property_spatial | 1784.73493686332
(10 rows)

If I have this query right in my head, this means that the average tuple in
the property relation is taking up 19k? and the average tuple in the
result_entry_pkey index is take 1.5k?!

Is there a way I can get the database to coalesce free space? A vacuum
verbose shows that I have enough entries in the free space map...

Alex.