Some suggest you send presents or flowers to a girl you like.Some offer you help in organizing face-to-face dates, renting an apartment for your meetings, taking care of entire romance tours.
Also, make sure that the company takes care of security issues and has a clear anti-scam policy.
You should, probably, have an image of how you are going to communicate with your potential wife.
Obviously, you cannot predict 100% how your relations are going to develop and which means of interaction would be the most convenient and proper.
Apparently, the experience differs from one person to another and unpleasant issues one man had with a certain portal do not mean that anyone else would ever encounter them again.
Nevertheless, it is important to evaluate the reputation of dating websites in advance and to be aware of possible advantages and drawbacks that are rarely obvious when you check the website for the first time.