All effects included here will be rendered as a bitmap that includes transparencies, guassian blurs, feathering (which is the same a blur) shadows, glows and some complex fillls. Unless you want someone else to edit the file it is no problem. As I said yesterday that step may not show up on the wet copy if you have a laser printer have a shot at printing it out or pay for a print at your local digital print shop as it will only cost you a dollar for and A4 sheet. I have seen files with this effect before and even white borders around whole areas of transparencies which have been rendered into bitmaps which caused no problems when printed. If you work in layers with the text layer on top with lessons the effect as well as overprint. Other way to solve problems like this is the way that AI does it is to flatten your transparencies (rasterize the area) make a bitmap copy of the area. Now AI does this with one cllick of a button and highlights the areas effected but it is quite simple to do Shift+Ctrl+C then hide your vectors using your layers palette. When you think of it that all the PDF export is doing rasterizing the areas but it is doing it for the whole affected area and not just on a background or on just text. That is the beauty when you use layers you have more control of the design, the output and the quality of your drawing