Hey.... you're welcome, SharesLatinWife.
If by "this" you mean the site, "Real Women Don't Do Housework" — yes, I recommend that (as I mentioned above). Lady Misato's approach is quite psychological, and has good potential, I would say, for increasing the closeness of your relationship with your wife and making it more intensely erotic. I'll also note that the author, Lady Misato (a pseudonym), does not explicitly recommend a married woman take lovers. The approach she recommends, however, in her series of chapters, is well suited to a hotwife / cuckold husband marriage such as yours.
Maybe that's because your wife is a busy woman....
Could be. There seems to be a fairly large, and increasing, online literature about hot wife / cuckold husband marriages and relationships, in which the woman is free to date, seduce and fuck whomever she wishes, while her husband pledges to remain faithful to her (and actually does so). You might get your wife started by suggesting she read, in addition to "Real Women Don't Do Housework," the following:
The cuckold husband / hotwife phenomena, by Dr. Cherry Lee, Ph.D.:
The Cuckold Phenomena
The Science of Cuckoldry, by sex therapist and relationships counselor Susan Gower:
The Science of Cuckoldry
Both articles are well-written, relatively short and easy to read (and are non-pornographic). I suspect your sexy wife would find them quite interesting and informative.
Good. I like that.
Yes, you have it right. A married woman who expands her sexual horizons by taking lovers also tends to increase her self-confidence and psychological well-being, since it becomes obvious to her she is capable of attracting the physical attentions of men other than her husband.
That's natural. It's easier for a married woman to fuck men she knows, who are thus likely to be her and her husband's friends, than men she doesn't know, whose responses may be unpredictable. This increases the psychological difficulty for the cuckold husband (you, in this case) by making it necessary for him to live with the knowledge that his friends, and often his co-workers, are fucking his wife — or want to, and probably will. Some... perhaps many... cuckolds, however, find that this is an aspect of their wife's promiscuity that turns them on.
Good.
I agree, passionate kissing is an important aspect of you and your wife expressing your love and your emotional connection with each other. Another way to express your emotional connection, whenever your wife comes home after fucking a lover, would be for you to clean her pussy with your tongue. Your wife could accomplish this by mounting your face while you lie on your back on your bed, and riding your face while you suck and lick her lover's cum from her pussy (and swallow it). Alternatively, you could kneel between her legs while sucking and licking her lover's cum from her pussy, giving her (one hopes) another orgasm in that way.
Yes.... kissing appeals to your wife and her lovers for the same reasons it appeals to you. It's an aspect of her and their sexuality.
I wish you and your wife continued success with your relationship. It appears to me that both of you are on the right track.