simple question...

Taking excessive doses at the beginning of a cycle for instance if you were planning on using EQ for a cycle at 400 mg per week , you would run the first week at much higher dosages(usually double) in order to "load" the substance , You will find arguments both for an against
You WILL get higher levels quicker by utilizing this bit of pharmacokinetics.
The question that gets debated is whether this does any good in terms of cycle gains. (I do it).
It is a way to get your blood levels up to maximium theraputic levels quickly, as opposed to letting them slowly build up over 3 or 4 weeks. It is usually only done with gear containing long esters, like Test Enanthate or Cypionate, Deca and EQ.
Just to add to what was already said. Most frontloads are double your dose for 1 or 2 weeks in the begaining of a cycle.

After the last frontloading question, I won't tell any more jokes:D on frontloading any way;)