Dude.
Affect and effect are sometimes confused. Affect conveys influence over something that already exists, but effect indicates the manifestation of new or original ideas or entities:
...new governing coalitions during these realigning periods have effected major changes in governmental institutions.
...new governing coalitions during these realigning periods have affected major changes in governmental institutions.
The former indicates that major changes were made as a result of new governing coalitions, while the latter indicates that before new governing coalitions, major changes were in place, and that the new governing coalitions had some influence over these existing changes.
The verbal noun uses of affect are distinguished from the verbal noun uses of effect more clearly than the regular verb forms. An affect is something that acts or acted upon something else. However, an effect is the result of an action (by something else).
Garde la Foi, mes amis! Nous nous sommes les sauveurs de la République! Maintenant et Toujours!
(Keep the Faith, my friends! We are the saviors of the Republic! Now and Forever!)
LonePalm, le Républicain du verre cassé (The Broken Glass Republican)